h, 184;
Koelliker's experiments with, 184.

B

BALANCERS, of _Tabanus atratus_, 34;
of _Chrysops niger_, 33;
of _Diplosis resinicola_, 33.

BASCANION CONSTRICTOR, recognition of individuals by, 75;
bird decorates its nest with skin of, 127.

BASS, parental affection in, 138;
homing sense in black, 200.

BECKIA, ants domesticate and pet, 126.

BIRD, memory of individuals in, 76, 77;
gratitude in, 77, 93;
homing sense in, 199.

BOMBARDIER BUG, death-feigning in, 211.

BRACHIONUS, actinophrys captures, 7.

BRACHIONUS URCEOLARIS, death-feigning in, 206.

BUMBLEBEE, revenge and anger in, 71;
recognition of a certain dog by, 71.

BURYING BEETLE, homing sense in, 197.

BUTTERFLY, suitable food for larva selected by, 103;
age of tropical, 137;
Miranda's observations, 137, 138.

C

CALOTIS, third eye of, 27.

CANTHON LAEVIS, death-feigning in, 210.

CAPUCHIN MONKEY, surgical operation on a, 95;
faith in man's ability to aid evinced by a, 96.

CARABIDAE, auditory vesicles of, 37;
memory of locality in, 64.

CAT, pride of offspring in a male, 142;
idea of time shown by a, 177.

CATFISH, parental affection in, 138, 139.

CERAMBYX, sense of hearing in, 36;
Will's experiment with, 36.

CHACMA, cat chosen as friend by, 83;
author's test for memory of individuals in, 84.

CHAMELEON, educated, 75;
recognition of individual by, 75.

CHICK, pigment cells in embryonic, 186, 187.

CHIMPANZEE, laughter and smiles evinced by, 89;
faculty of computing in, 177;
recognition of property rights by, 221.

CHRYSOPS NIGER, balancers of, 33;
organs of hearing in, 33.

CICINDELIDAE, auditory vesicles of, 37;
memory of locality in, 64.

CLAVIGER FOVEOLATUS, ants make a pet of, 73.

COCCINELLAE, peculiar assemblages of female, 126, 127.

COCK, friendship between a drake and a, 78;
fondness for violin music in a, 122.

CONSCIOUSNESS, definition of, 43;
time element in, 44;
the probable location of active, 216;
the probable location of the sub-liminal, 216.

CORYDALIS, auditory rods of, 30.

COW, dog the guardian and friend of a, 80.

CRAB, Pouchet's experiment on the chromatophores of, 189.

CRAYFISH, eyes of, 21;
power of vision in, 23;
pugnacity of, 23.

CRICKET, ears of, 31.

CYMOTHOE, eyes of fresh-water, 13.

D

DETERMINATION, the origin of conscious, 40.

DINOCHARIS POCILLUM, death-feigning in, 206.

DIPLOSIS RESINICOLA, bal